Home / 158,943.24-219,438-105,274.26

Finding the Fourth Proportional to 158,943.24, 219,438 and 105,274.26

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Solution

The fourth proportional to 158,943.24, 219,438 and 105,274.26 is: 145,342.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,943.24 : 219,438 = 105,274.26 : x
  2. Step 2: Convert to fraction form
    158,943.24/219,438 = 105,274.26/x
  3. Step 3: Cross multiply
    158,943.24x = 219,438 × 105,274.26
  4. Step 4: Simplify right side
    158,943.24x = 23,101,173,065.88
  5. Step 5: Solve for x
    x = 23,101,173,065.88/158,943.24
  6. Step 6: Final answer
    x = 145,342.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.